Portable power supply



FIG. 1 is a first perspective view of a portable power supply, showing our design.

FIG. 2 is a second perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a right side elevation view thereof.

FIG. 7 is a top plan view thereof.

FIG. 8 is a bottom plan view thereof.

FIG. 9 is an enlarged view of a circle labeled 9 in FIG. 1 of the portable power supply; and,

FIG. 10 is an enlarged view of a circle labeled 10 in FIG. 1 of the portable power supply.

The broken lines are for environmental structure, boundaries, or illustrative purposes only and form no part of the claimed designs to be patented. 

CLAIM The ornamental design for a portable power supply, as shown and described. 